I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well, a new paper suggests that those impressive tusks were likely sexually dimorphic and possibly used in intraspecific competition. https://t.co/wL8PzG47mm https://t.co/4xHkYOG1lF
Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process of Placerias hesternus.
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Jun 2024 – Aug 2024Where it's discussed
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X / Twitter23 posts
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YouTube2 videos
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What people are saying
Discussions reflect a strong interest in the findings, with several posts emphasizing the significance of the evidence for sexual dimorphism and potential behavioral implications, such as intraspecific competition. Phrases like 'proof of one of the oldest sexual traits' and references to childhood memories show enthusiasm and engagement, highlighting the study's perceived importance in evolution studies.
Most discussions support the idea that the study provides strong evidence for sexual dimorphism in Placerias, highlighting its significance in understanding prehistoric sexual selection.
Participants show high curiosity about the research, especially considering its implications for understanding evolution and dinosaur behavior.
Comments include references to related media and personal anecdotes, indicating a moderate level of detailed discussion.
The discussions suggest the study is viewed as an important contribution to paleo-paleontological knowledge, though not universally transformative.
Abstract in brief
- Placerias hesternus, a Late Triassic dicynodont, features a unique tusk-like process on its maxillary bone, which has been debated as a sexually dimorphic trait since the 1950s.
- The study analyzed bones from a single population at Placerias Quarry in Arizona, using 25 measurements to assess whether the caniniform process is dimorphic, resulting in strong statistical evidence for two distinct morphs based on its length.
- Findings indicate that while there is significant dimorphism in the caniniform process, other bones show no strong evidence of such traits, suggesting the caniniform acts as a secondary sexual characteristic, potentially linked to competition among males.
Top posts
Most liked on X and Bluesky#PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https://t.co/JwgnnazUsf
New study from James Pinto, Charles Marshall, Sterling Nesbitt, & Daniel Varajao de Latorre on Placerias dimorphism provides evidence for one the oldest known examples of a well supported secondary sexual trait in the fossil record. @ucmpberkeley https://t.co/KdNyvNaxBt https://t.co/DvQlFPfftV
RT @TomHoltzPaleo: #PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https:…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
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RT @ucmpberkeley: New study from James Pinto, Charles Marshall, Sterling Nesbitt, & Daniel Varajao de Latorre on Placerias dimorphism provi…
New study from James Pinto, Charles Marshall, Sterling Nesbitt, & Daniel Varajao de Latorre on Placerias dimorphism provides evidence for one the oldest known examples of a well supported secondary sexual trait in the fossil record. @ucmpberkeley https://t.co/KdNyvNaxBt https://t.co/DvQlFPfftV
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @TomHoltzPaleo: #PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https:…
RT @TomHoltzPaleo: #PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https:…
RT @TomHoltzPaleo: #PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https:…
RT @TomHoltzPaleo: #PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https:…
RT @TomHoltzPaleo: #PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https:…
RT @TomHoltzPaleo: #PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https:…
RT @TomHoltzPaleo: #PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https:…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
RT @TomHoltzPaleo: #PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https:…
RT @JamaleIjouiher: I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well,…
I admit I have a soft spot for the #dicynodont #Placerias, ever since watching #walkingwithdinosaurs as a child. Well, a new paper suggests that those impressive tusks were likely sexually dimorphic and possibly used in intraspecific competition. https://t.co/wL8PzG47mm https://t.co/4xHkYOG1lF
#PLOSONE: Quantitative evidence for dimorphism suggests sexual selection in the maxillary caniniform process ... https://t.co/JwgnnazUsf